120 pcs Square Tube Insert:100 pcs 20*20mm Square Tube Insert & 20 pcs 25*25*20mm Square Tube Insert Offer a neat and safe finish to tube ends. Tube inserts can prevent dirt and dust ingress. Made of black plastic with ribs to secure. Product name:Square Tube Insert Material:Plastic Color:Black Net Weight:183g + 71g Battery Included: No Top Size:20 x 20mm / 0.8 inch x 0.8 inch (L*W) Mounting Size:19 x 19mm / 0.75inch x 0.75inch (L*W) Total Height:13mm / 0.5inch Hole Size: 17 x 17mm/0.67inch x 0.67inch (L*W) Thread Size: 24 x 24mm/0.94inch x 0.94inch (L*W) Bottom Size: 19 x 19mm/0.75inch x 0.75inch (L*W) Total Size: 25 x 25 x 20mm/1inch x 1inch x 0.8inch (L*W*H) Package Content: 120 x Square Tube Insert Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.