Durable Materials - Made of premium 40Cr steel and tungsten alloy, this hole saw bit kit provides years of service even under harsh service conditions
High Quality - Made of a hard-tipped metal material with super robustness and durability, it can be used for many years in the harshest conditions without any loss of performance.
Excellent design - high frequency welding technology, very strong welding joints, smooth inside and outside welding joints.
