The water thread in the block is easy and accurate. [Uses] Water thread guide for block loading. [Functions and Features] Easily tightens water threads in block compartments. The water thread guide can also be attached to the Takumi Miere water thread. Specifications: For 3.9 inches (100 mm) wide blocks. Material: Guide: ABS. Product Size (W x H x D): 1.5 x 5.7 x 2.3 inches (38 x 146 x 58 mm); Weight: 0.6 oz (16 g); Product Code: 4960587044506; JAN Code: 4960587044506; Brand Name: Tumi