hole triangular Assembly 4-12/4-20/4-32mm drill handle groove worker set 3/6/8 saw 6pc drill straight ladder punching hole triangular Assembly 4-12/4-20/4-32mm drill handle groove worker set 3/6/8 saw 6pc drill straight ladder punching hole triangular Assembly 4-12/4-20/4-32mm drill handle groove worker set 3/6/8 saw 6pc drill straight ladder punching hole triangular Assembly 4-12/4-20/4-32mm drill handle groove worker set 3/6/8 saw 6pc drill straight ladder punching hole triangular Assembly 4-12/4-20/4-32mm drill handle groove worker set 3/6/8 saw 6pc drill straight ladder punching hole triangular Assembly 4-12/4-20/4-32mm drill handle groove worker set 3/6/8 saw 6pc drill straight ladder punching hole triangular Assembly 4-12/4-20/4-32mm drill handle groove worker set 3/6/8 saw 6pc drill straight ladder punching hole triangular Assembly 4-12/4-20/4-32mm drill handle groove worker set 3/6/8 saw 6pc drill straight ladder punching