This product is a set of telescopic gauge set, mainly made of stainless steel. It is safe and durable, has excellent texture. It can serve you well. With a reasonably designed structure, the telescopic gauge set is used to measure the super length of deep and shallow holes, grooves and similar parts. Features -Color: Silver. -Material: Stainless steel. - This telescopic bore gauge can holes, slots and recess up to 6 inch deep. - Telescoping gauge set has good finished and so that the product has a . - The spring tension of telescopic bore gauge set gives uniform contacts pressure, can detect the inner diameter in a hole (or groove). - Used for measuring holes, slots, grooves, and recesses in woodworking, metalworking, machining,and pattern-making applications. - To be made of stainless steel materials, it is strong and durable and can serve you for a long time. Package list: 4 x Telescoping Gage Sets