Industry Standard tube thread,1.375"-24 TPI,60 degree storage cups The default length is 10 inches with 8 cups:10''L 1.6'' OD Aluminum 1/2-28+5/8-24 Fuel Filter Modular Solvent Trap Screw Cones Customers can decide on the number of storage cups they want to use during cleaning and trapping solvent, which will depend on the caliber and how much solvent the user requires during cleaning. Because cups are consumables, customers can purchase a few more for backup use.