Outslayer Outslayer Speed Bag Platform  – Train like a pro with this exceptional home model. Comes with 10 Year Warranty. Double Layer Full 2.1/4 thick strike board with 24 diameter handles all speed bag sizes. Professional swivel included. Holes aligned for 16 on-center studs. Heavy 11 gage steel construction. Perfect bounce guaranteed! Made in USA This is a very good quality.