Jacobs Chuck Jacobs 0B-5/16 in Plain Bearing Medium Duty Keyed Chuck, 1/8 in - GW JCM6204 Chuck Ball joint pullers the shape of the spring

the shape of the spring or spring pitch is irrelevant

The Wera 7775 9x12mm Open-Ring 11mm Square Drive Insert 05078651001 is available to order online

Square Bit Selector at a better price

MKR/MKS contacts

1 x KL-0039-1746 - Pressure / support sleeve long 46 / 38mm dia

Jacobs Chuck Jacobs 0B-5/16 in Plain Bearing Medium Duty Keyed Chuck, 1/8 in - GW JCM6204 Chuck Ball joint pullers the shape of the springJacobs 0B 5 16 in Plain Bearing Medium Duty Keyed Chuck, 1 8 in GW JCM6204 A Keyed Chuck refers to a type of mechanical device commonly used in various tools and machinery, particularly in the realm of drilling equipment. The term specifically applies to the chuck, which is the component responsible for holding and securing a rotating tool, such as a drill bit, in place. Features: Jaws center ground for absolute straightness and alignment One piece