The MagPin 3A features a high strength thermoplastic collar between the aluminum head and your rack attachments, a true scratch and scuff free solution! Welcome to version 3 of the original MagPin! Aluminum head construction, stainless steel pin shaft & fully concealed power; it's the most advanced MagPin yet. We love 'em, and you will too! Used throughout the gym to attach various accessories to racks and squats stands. What we don't love; hairpin clips, detent balls, and pin handles that look like they're from a tractor supply store. MagPin's provide 4-1/2" of useable shaft length for engagement. Sold in pairs. Assembled in Canada. *To be used by experienced lifters only. Ensure proper installation prior to each lift and always use a failsafe method of attachment securement. Always use the appropriate shaft size in your rack holes.*