Makita 763198-1 3/8" Keyless Chuck with 1/4 Hex Shank, Previously 7630977A

Makita 7631981 Specifications:
• 3/8" Size
• 1/4" Hex Shank

Makita 7631981 Features:
• All metal housing for greater durability
• Convert an impact driver's 1/4" hex drive to a 3/8" keyless 3-jaw chuck to accept round shanked bits
• For use with Makita 6901D, 6903VD, and 6911D