The fully CE Certified Iron Draw from So iLL is perfect for your climbing gym. The removable pin system (with allen wrench) allows you to change the biner from the sling at anytime. Pins are used to keep the biner from spinning during heavy gym use. Other models use a "hammer-in" pin making them almost impossible to change out.
Steel Carabiner (CE Certified) Iron Draw Length (Without Biners): 7 in / 18 cm Steel 8MM Quick Link (CE Certified) Easy Release Removable Pin System Heat Shrink Wrapped Iron Draw Wrench Bulk Discounts Available