Proplus | sku: 351004 Proplus Black Nipple Kit, 1/2 In. 66 Assorted Nipples In 1/2in. Kits: Close, 1-1/2in., 2in., 2-1/2in., 3in., 3-1/2in., 4in., 4-1/2in., 5in., 5-1/2in. and 6in. Durable Cardboard Box with Handle Meets Astm A-53 Log in for pricing