screw extractor: 1.sizes:No.1/2/3/4/5/6/7/8 2.types:twist, spiral, square 3.alloy steel, carbon steel 4.PVC bag, plastic box

Description:	screw extractor in tool
Specification:	No.1  M3~6(1/8~1/4)
	No.2  M6~8(1/4~5/16)
	No.3  M8~11(5/16~7/16)
	No.4  M11~14(7/16~9/16)
	No.5  M14~18(9/16~3/4)
	No.6  M8~25(3/4~1")
	No.7  M25~33(1"~1 3/8")
	No.8  M33~50(1 3/8~2")
Surface:	black finished or sandy blast
Material:	CRV-HRC58-60
	carbon steel-HRC40-48, alloy steel
Packing:	plastic box or PVC bag or blister card