0-3/8" RatchKey Chuck Key HC-10

Most of the chuck keys provided by manufacturer’s with their tools are virtually worthless. The standard “L shape” design doesn’t allow you to really tighten the chuck, which often results in bit slippage and a burr on the shank. These Ratchkey chucks are better than just simple replacements. The one-way ratcheting action allows you to tighten chucks faster and more easily, and the handles are large enough to allow you to exert the appropriate force (the steel-handled TwinKey can apply upto 135 inch pounds of torque, and the smaller, red handle RatchKey can apply up to 120 inch pounds of torque). Surprisingly, there is no standard size for chuck keys, and most of the installed chucks do not have any model number on them. That means selecting the right model is a bit tricky. To help you select, our web site lists many of the chucks each key will fit. Available in two styles: the TwinKey™ has two pair of different chuck keys at opposite ends of the steel grip, while the Red RatchKey has one pair of ratcheting keys on the end of an steel reinforced plastic handle. Note that Bosch tools typically use Rohm chucks. Made in USA.

The RatchKey model H-10 will fit most 0-3/8" Drills,
as well as Jacobs style and other chucks (See Below)

BLACK AND DECKER
64567-01 69586-01 74687-01	66427-01 73356-01

JACOBS
SMIG61 DC4G61-T1 DC4G61-T2 KM4G61-T2 (3 MODELS) SM4G61 SM4G61-T1 SM4G61-T2 20 BA 3/8" 22 KG 3/8"	SMIHI, MC1 MC1660 MC1G41 MC1G61 MC2, U4G U4G41 DC1G61T-YI DC1G61T-YII HAG61

MAKITA
6002D 6010D 6012HD 6071D 6073D 6040DW	6010SDW 6092D 6093D 6072D 6070DW

ROHM (S-14)

LCT8-38TH LCT8-12TH LCT8-38TH

SEARS

Fits most Sears 3/8" Drills

SUPREME
1A 1T1 BIA B80A CPB80A B85A B90A BM1A	B250A 4BF BM80A B80J BM90A BP1A

REPLACES KEYS

B&D (U1529) JACOBS (KG, KG1) ROHM (S-14)

TECHNICAL RESOURCES AND LINKS