size: 4-12,4-20,4-32mm
material: M35,M2,4241#,4341#
color: amber,bright,tin
flute: straight, spiral
shank: R hex , hex , triangle
packing: 1pcs blister paper card , 3 pcs blister paper card , 1pcs plastic box ,3pcs plastic box , 3pcs metal box ,3pcs wood box
