Klein Long Ball-End Hex Key Set, Metric, 10 Pieces (BLS10M)
Klein Long Ball-End Hex Key Set, Metric, 10 Pieces (BLS10M)
Out of Stock - Available to Order - Usually ships in 15-20 days
Product Details
Product Details
Key Features
Overview
The Klein Tools Long Ball-End Hex Key Set, Metric, 10 Pieces (model BLS10M) is an L-style metric hex key set that puts the ten most-used metric sizes in one compact case. This is a hand tool set designed for tightening and loosening hex screws and bolts.
The set covers 1.5, 2, 2.5, 3, 4, 5, 6, 7, 8 and 10 mm. Key lengths run from 3 in to 7 in (76 to 178 mm), and the extended-reach ball ends work at angles up to 25 degrees.
Every key is heat-treated and tempered for strength, with a black phosphate finish that resists rust. The Twist-to-Lock case holds each key with an internal lock and stacks with other Klein Twist-to-Lock cases.
It weighs 14.08 oz (399 g) and is a good fit for mechanics, maintenance techs and equipment installers who need metric hex keys that fit in a tool bag. Do not use a pipe or extension for leverage. The keys are not insulated.
Reach Fasteners at an Angle

The ball end lets you drive a fastener without lining the key up perfectly.
- Works at angles up to 25 degrees
- Long arm for extended reach
- 10 metric sizes, 1.5 to 10 mm
What's in the Box
- (10) Metric hex keys: 1.5, 2, 2.5, 3, 4, 5, 6, 7, 8, 10 mm
- Caddy
Key Specifications
| Sizes | 1.5, 2, 2.5, 3, 4, 5, 6, 7, 8, 10 mm |
|---|---|
| Number of Pieces | 10 |
| End | Ball |
| Material | CR-V Steel |
| Finish | Black Phosphate |
| Key Lengths | 3 in to 7 in (76 to 178 mm) |
| Overall Length | 7 in (178 mm) |
| Overall Height | 1-1/8 in (28 mm) |
| Overall Width | 3-1/8 in (79 mm) |
| Weight (oz) | 14.08 (399 g) |
Tool Nut's Take
A Metric Set You Will Actually Carry
The Klein Long Ball-End Hex Key Set, Metric, 10 Pieces covers the sizes you reach for most in one stackable case.
- Who it's for: Mechanics, maintenance techs and installers working on metric hardware.
- Why it stands out: Ball ends, long reach and a case that keeps keys from falling out.
- Worth knowing: Metric only, with no inch sizes.

Join over 1/2 million customers who have trusted Tool Nut and given us a 4.8+ star rating on Google. Celebrating over 30 years of building together, since 1994.
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

