For the usage of MT shank, taper shank drills, reamers reducing. The reducing drill sleeve is made from high quality 45# steel, sturdy and durable in use Adopts overall quenching process, long life, lasting, strong shock-resistance. High accuracy, inside and outside are very smooth Easy to store and maintain, very practical tool.For the usage of MT shank, taper shank drills, reamers reducing. The reducing drill sleeve is made from high quality 45# steel, sturdy and durable in use Adopts overall quenching process, long life, lasting, strong shock-resistance. High accuracy, inside and outside are very smooth Easy to store and maintain, very practical tool.

Specifications:
Model: 1-2 2-3 3-4
Material: 45# steel
Accuracy: 0.015mm
Hardness: HRC58
Size:
MT1- MT2: length: 92mm / 3.62in, bottom hole diameter: 12mm / 0.47in
MT2- MT3: length: 112mm / 4.41in, bottom hole diameter: 17mm /0.67in
MT3- MT4: length: 133mm / 5.24in, bottom hole diameter: 23mm /0.91in
Weight: 569g

Package included:
1 x MT1- MT2 Taper Adapter
1 x MT2- MT3 Taper Adapter
1 x MT3- MT4 Taper Adapter

Note:
Please allow 1-3mm error due to manual measurement. Thanks for your understanding.