Klein Folding Multi-Purpose Jab Saw (31757)
Klein Folding Multi-Purpose Jab Saw (31757)
Out of Stock - Available to Order - Usually ships in 15-20 days
Product Details
Product Details
Key Features
Overview
The Klein Tools Folding Multi-Purpose Jab Saw (31757) is a compact, folding hand saw for cutouts and penetration cuts. This is a jab saw designed for cutting openings in drywall, wood, plastic and metal, including the hard-to-reach cuts where a full-size saw will not fit. Klein model 31757 ships with four replaceable blades and folds closed for storage and transport.
The blade lineup is what makes it multi-purpose. Klein includes blades at 6, 8, 10/14 and 24 TPI (teeth per inch). The coarse blades clear drywall and wood fast for box and fixture cutouts; the fine 24 TPI blade is the one to reach for on metal and plastic, where a coarse tooth chatters and grabs. The blades are bi-metal and alloy steel, up to 6" (15.2 cm) long.
Because the blades are reciprocating saw-compatible, replacements are easy to source and a tool-free blade lock makes the swap quick on the job. That also means you are not locked into a proprietary blade when one wears out or breaks.
Dual locking positions set this apart from a fixed jab saw. At 180 degrees the blade extends straight out for full reach into a wall cavity. At 125 degrees it locks at an angle, which gives you clearance for your knuckles when you are cutting close to a stud, a ceiling, or the back of a cabinet.
The handle is plastic, aluminum and rubber with an overmolded grip shaped to fit the hand, plus a flat, cushioned base designed for palming. That base lets you push a penetration cut through drywall with the heel of your hand while keeping control. Overall length is about 11-7/8" (30.2 cm) with a 7-1/8" (18.1 cm) handle, and the saw weighs 8.7 oz (247 g).
Who should buy it: electricians cutting in old-work boxes, low-voltage installers, plumbers and HVAC techs opening walls for access, remodelers, and DIYers who want one compact saw that covers drywall and the occasional pipe or trim cut.
Match the Blade to the Material
Coarse teeth for drywall and wood, fine teeth for metal and plastic, all in one handle.
- Four blades: 6, 8, 10/14 and 24 TPI
- Bi-metal and alloy steel blades
- Reciprocating saw-compatible blades with tool-free blade lock
Get Into Tight Spots
Lock the blade at 125 degrees when a straight saw puts your hand into the stud or ceiling, or at 180 degrees for full reach.
- 125-degree partial-open lock
- 180-degree full-extension lock
- Rated for standard applications and penetration cuts
Folds Shut, Rides Safe
The handle folds over blades up to 6" long, covering the teeth so the saw can go in a pouch without chewing up everything else in it.
- Folds with blades up to 6" (15.2 cm)
- Overall length 11-7/8" (30.2 cm) open
- Weight: 8.7 oz (247 g)
Palm It Through the Cut
The flat, cushioned base gives you a place to push with your palm on a plunge cut, and the overmold keeps the grip secure.
- Ergonomic overmolded handle
- Flat, cushioned palming base
- Handle length 7-1/8" (18.1 cm)
Key Specifications
| Type | Folding jab saw |
|---|---|
| Blades Included | 4 replaceable blades |
| Teeth Per Inch | 6, 8, 10/14, 24 TPI |
| Blade Length | Up to 6" (15.2 cm) |
| Blade Material | Bi-metal, alloy steel |
| Blade Thickness | 1/16" (1.5 mm) |
| Blade Lock Positions | 125 and 180 degrees |
| Cuts | Drywall, wood, metal, plastic |
| Overall Length | 11-7/8" (30.2 cm) |
| Handle Length | 7-1/8" (18.1 cm) |
| Width x Height | 1-3/4" x 1-7/8" (4.4 x 4.8 cm) |
| Handle Material | Plastic, aluminum, rubber |
| Weight | 8.7 oz (247 g) |
Compatibility
Built For
Pro Tip
Start a box cutout with the 180-degree position and the palming base to punch through, then flip to the 125-degree lock to finish the side of the cut that runs along the stud. Your knuckles will thank you.
Tool Nut's Take
One Folding Saw, Four Materials
The Klein Tools Folding Multi-Purpose Jab Saw (31757) replaces a drywall saw and a mini hacksaw with one folding handle and four blades.
- Who it's for: Electricians, low-voltage and remodel crews who cut a lot of openings in finished walls.
- Why it stands out: Two blade lock angles, tool-free swaps and reciprocating saw-compatible blades you can replace anywhere.
- Worth knowing: Blade length tops out around 6" for the fold to close, so it is a cutout saw, not a pruning or demo saw.
Common Questions
- What blades come with the Klein 31757? Four blades at 6, 8, 10/14 and 24 TPI for drywall, wood, plastic and metal.
- Can I use standard reciprocating saw blades? Klein describes the blades as reciprocating saw-compatible, swapped with a tool-free blade lock. The handle folds with blades up to 6" long.
- What angles does the blade lock at? 125 degrees for partial opening and 180 degrees for full extension.

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