MACK 10 SERIES PINSTRIPING BRUSH Part# 10-1 (1 Brush) SIZE: 1 HEAD WIDTH(INCHES/MM): 5/16 / 7.93mm; A Newly Designed Exceptional Brush Just For Pinstripers! 10 Series - Squirrel Hair SWORD Stripers (The 10 series is made in sizes 000 00 0 1 2 3 4) 100% Unmixed Blue Squirrel Hair Hand Crafted And Shaped As It Was Many Years Ago Extra Attention Given To Quality Control With Respect To Shape And Cleaning The Very Finest Grade Of Blue Squirrel Our New Blue Thread Ferrule