Stone Tools ST-12 The Original Professional Master Chuck Key
The Stone Tools professional grade 4 way chuck key with
black oxide finish is an ideal accessory for securing drill bits onto drill
presses. This key is made of high quality steel with black oxide for increased
wear resistance. Most importantly, the chuck key is compatible with many
chucks such as Jacobs branded drill chucks. From the Manufacturer The Stone
Tools Model Number ST-12 Master Chuck I, the original professional master
chuck key, opens heavy duty 3/8-Inch to 3/4-Inch chucks. Made from heat
treated alloy steel with a black oxide finish, it will open over 86 different
chucks. Squared center of the key will open acetylene tanks.
 
Product Features
  

         
The Stone Tools 4 way chuck key is the ideal tool for unlocking and locking of various, popular drill chucks to keep drill bits in place
         
Each key is made of heat-treated steel with a black oxide finish for an optimal combination of durability and hardness
         
Center square feature is ideal for opening acetylene tanks
         
Includes 4 pilot hole sizes: 3/8" with 12 teeth; 1/4" with 10 teeth; 5/16" with 11 teeth; 1/4" with 11 teeth