Our company is specialized in spare parts for BOPP sealing tape slitting machine. The plastic sleeve, expansion sleeve and expansion sleeve are made of imported ABS new material. The surface is smooth and resistant to heat and abrasion. Plastic sleeve specifications: 71mm.59mm.49mm.47mm.45mm.39mm.35mm.23mm, inner diameter is 50.4mm, available working for 76-78MM paper tube, this product is a standard accessory.