2" Twin Wheel 5/16" Threaded Stem Brake Swivel Nylon Casters 10pcs Main Material: Nylon, Metal; Package Content: 10pcs x Thread Stem Caster Wheels Product Name: Thread Stem Caster Wheel; Weight: 752g Features: Twin Wheel; Main Color: Black Overall Size: 6 x 4.5 x 7.3cm/ 2.4" x 1.8" x 2.9" (L*W*H); Wheel Size: Each: 5 x 1.2cm/ 2" x 0.5"(D*T) Threaded Stem Size: 8 x 15mm/ 5/16" x 5/8"(D*L)