2 pcs. set. Available for 2 ventilator sizes 3/4" and 1".
For setting 3/4” Ventilators:
1.- Punch 9/16 hole in material (Use Osborne No. 149 -9/16” punch or on vinyl use No. 149 7/16 punch).
2.- Lay ventilator neck up on base, place material over ventilator, now slip ventilator ring on bow side up. A few even taps with an Osborne Rawhide Mallet No. 196 will set ventilators.
For setting 1” Ventilators:
1.- Punch 3/4 hole in material(Use Osborne No. 149 -3/4” punch or on vinyl use No. 149-5/8 punch).
2.- Lay ventilator neck up on base, place material over ventilator, now slip ventilator ring on bow side up. A few even taps with an Osborne Rawhide Mallet No. 196 will set ventilators.
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