SPECS:
Navcom polymer, black. 1" (2.54cm) thick. Small – 4-13/16 " (12.2cm) long, 1-27/32" (4.7cm) wide; grindable to 3-7/8" (10cm) long, 1-11/32" (3.4cm) wide. Medium – 5-3/32” (13cm) long, 1-13/16" (4.6cm) wide; grindable to 4¼" (11cm) long, 1-5/16" (3.3cm) wide. Large – 5-9/16" (14cm) long, 2-1/16" (5.2cm) wide; grindable to 4-7/16" (11.3cm) long, 1-19/32" (4cm) wide.
Catalog page 414