Specifications: Pin: 3.75 Dia. x 101.6 Pin Hole: 4.00 Spring: 8.40 Dia. x 89mm Spring Hole: 8.50 Screw: m10 x 8mm Each UNIKIX(tm) Spring Pin consists of a hardened steel rod soldered to a compression spring. A UNIKIX(tm) Spring Pin can eject a sheet-metal part after cut-off. This can prevent the sheet metal from being held against the stripper by stamping-fluid surface tension. UNIKIX(tm) Spring Pins can prevent slug pulling. This can prevent the slugs from being pulled upward out of the matrix when the die opens. The spring pins eject the slugs by overcoming the stamping-fluid surface tension which can cause the slugs to adhere to the ends of the punches. A UNIKIX(tm) Spring Pin can also delay the actuation of an electrical switch.