Item Type: Auxiliary Tool Holder Material: 20CrMnTi Square Size: Approx. 25x25mm / 1x1in, 30x30mm / 1.2x1.2in Product Length: Approx. 175mm / 6.9in Applicability: For ER 32 Package List 1 x Auxiliary Tool Holder 1 x Storage Box Ask professionals to operate. 1High Hardness: Vacuum quenching furnace can realize carbon and oxygen coinfiltration, increase hardness and enhance service life. 2Centre Hole Design: The central hole design is conducive to water cooling, effectively suppressing vibration and increasing shock resistance. 3Square Holder: A square tool holder can hold tools of various diameters, which has strong versatility and reduces processing costs. 4Quality Material: Adopt 20CrMnTi material, not easy to deform, detailed and comprehensive protection. 5Easy to Carry: The collets turning tool comes with a storage box, which is convenient to carry when you go out.