Kedu nha katrij?

	Mgbe ị na-azụ ahịa maka screwdriver na-enweghị eriri, ọ ga-abụ na ị ga-ahụ okwu ahụ bụ "chuck size." Nha chuck abụghị nha nke chuck dum, ọ na-ezo aka na dayameta shank kasị ukwuu nke chuck nwere ike ịnakwere.
Kedu ihe bụ dayameta shank?
	Dayameta Shank bụ nha n'etiti etiti obere shank. Ọ na-ekpebi ma ị nwere ike iji ngwa ọrụ gị jiri ntakịrị ihe. Nke a nha dịgasị iche dabere na udi nke shank.
	Screwdriver bits na-enwekarị hex shank, nke nwere udi hexagonal. A na-atụle dayameta nke hex shank site na etiti nke ọkpụkpụ n'akụkụ ndị dị larịị.
	chucks na-enweghị eriri na-abịa na nha inch abụọ: 1/4" (6.35mm) 3/8" (10mm)
	N'ikwu ya n'ụzọ dị mfe, ka nnukwu chuck size, ibu nke shank dayameta ọ nwere ike ịnakwere. Ị ga-achọpụta na ọtụtụ screwdrivers na-enweghị eriri nwere 6.35mm chuck. Nke a pụtara na ha nwere ike ịnakwere screwdrivers ma ọ bụ drills nwere oke shank dayameta nke 6.35mm.
	Nkịta 6.35mm zuru ezu maka ọtụtụ ọrụ ịkwọ ụgbọ mmiri n'ụlọ. Ọ bụrụ na ị na-eme atụmatụ ịrụ ọrụ dị arọ karị, dị ka mkpọpu mmiri, tụlee ịhọpụta ụdọ / ọkwọ ụgbọ ala na-enweghị eriri nwere nnukwu chack.