Box Two 3/8" BMX Chain Tensioners - Pair - Blue Sz 9.5 JIS Square interface

JIS Square interface

It is 1/2" x 3/32" x 106L and includes a connector link

It's the classic pad set you raced with back in the day -  emblazoned with the classic Flite logo you remember

It uses a 2-prong removal tool (not included)

Front Hub: Steel

Box Two 3/8" BMX Chain Tensioners - Pair - Blue Sz 9.5 JIS Square interfaceBox Two Chain Tensioners let you dial in your chain tension so it's just right. Two mounting holes provide room for ample adjustment on most frames. When used properly, Box Two Chain Tensioners help protect frame dropouts and keep your rear wheels locked in place where they should be. Axle: 3 8" Material: Aluminum Color: Blue