This listing is for ONE grip pin. Here are replacement grip pins for Colt D Frame Revolvers manufactured from 1947 until 1986. That includes models Detective Special, Cobra, Agent,Courier, Viper, Police Positive, and Diamondback. Construction is two piece alloy. Manufacturer is a local industrial supplier. Dimensions are .613 inch overall length; .187 inch middle section diameter; and .143 center piece diameter. Grip frame’s aperture is .200, so positioning the sleeve and center shaft will be required. Once the grips are tight, they’ll stay that way. We’re offering these hard to find pin sets each for only $ 9.90.