GRIP Hardware Rigging Adapters 3in Aluminum Baby Pin with 3/8in Male Thread Watch this product and we will notify you once it is back in stock. The product is now watched We will notify you once the product is back in stock again. E-mail Watch this product Your personal information is processed in accordance with our privacy policy. 3in Aluminum Baby Pin with 3/8in Male Thread 3in Aluminum Baby Pin with 3/8in Male Thread3" long baby (5/8") pin with a 3/8-16" male thread. Aluminum.