-№ 11/8"-1/4" (M3-6) -№ 21/4""-5/16" (M6-8) -№ 3 5 /16 "7/16" (M 8 -11) -№ 4 7/16 "-9/16" (M 11-14) -№ 59/16"-3/4” (M 14-18)