Bit Extension, Length: 12", Hex Shank Size: 7/16" (111mm), Fits Arbors: 18-1-1/8 - 18-1-1/4, 45-7/8 - 45-1-1/2, 61/62PTS-1-1/8, 61/62PTS-1-1/2, 62PTS-5/8 - 62PTS-1, 66PT-3/4 - 66PT-1-1/2, 149G-1 - 149G-3, 37155 & 37156
- Diameter: 7/16 in
- Diameter: 23/32 in
- Length: 12 in
- Type: Extension