Bullard Front Brim Hard Hat, Type 1, Class E, Pinlock (4-Point) (Yellow, Series 51) Female Insert The leather stropping wheel helps

The leather stropping wheel helps remove burrs and hones to a final razor edge

A variable speed foot pedal controls the speed of the material feed

which can span several years

and it also can use S-70 to S-230 steel shot

Bullard Front Brim Hard Hat, Type 1, Class E, Pinlock (4-Point) (Yellow, Series 51) Female Insert The leather stropping wheel helpsHard Hat, ANSI Classification Type 1, Class E, Head Protection Style Front Brim, Head Protection Color Yellow, Head Protection Graphics No Graphics, Fits Hat Size 6 1 2 to 8, Head Protection Material Polyethylene, Head Protection Venting No, High Visibility No, Standards ANSI Z89. 1 2009, Series S51 Dimensions Fits Hat Size 6 1 2" to 8" Details Item Hard Hat Head Protection Style Front Brim Head Protection Material Polyethylene Series S51 Suspension