R32 T38 T45 T51 Bench drilling Coupling Sleeve used for Connecting Extension rodExtension rods are made by hollow drill steels; there are two shapes of extension rods, round type and hexagonal type. This hollow hole are usually named flushing hole, used for transmitting water or air during drilling. And the threads can be used for connecting couplings, shanks, couplings or bits. Usually for extension rods, there are R22, R25, R28, R32, R38, T38, T45, T51, ST58, T60 threads, and different lengths of rods are available from 600mm to 6400mm usually. T38 Coupling Sleeve SizesT45 Coupling Sleeve SizesT51 Coupling Sleeve Sizes
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Factory :
1. We have 10-year engineering experience on drilling
We can provide detailed solution for you by email,phone and even video if you have any problems while drilling
2. Professional quality control system
Advanced equipment , International quality certification and ecperienced worker
3. In-time delivery
3 days if in stock; 15-20 days for production
4. Good after-service
1) Full compensation if it occurs that buttons are out ,broken and the body broken while button is worn less than 1/3
2) 24-hour online service
5. Strong production capacity
10000 pcs per month