This is a package of Twenty 4mm Single Blocks from Latina. FEATURES: Constructed of wood and used in the rigging of model ships INCLUDES: Twenty 4mm Single Blocks from Latina REQUIRES: Rigging thread SPECS: Height: 0.16" (4.1mm) Length: 0.20" (4mm) Width: 0.09" (2.2mm) COMMENTS: Also available in the following sizes; 3mm LATB8511, 5mm LATB8513, 6mm LATB8514 and 7mm LATB8515. JiM 3.29.07 ir/jxs