Grommet Special Use at Racket 12'Clock

Specail Grommet Grommet 6 Hole/8 Hole/10 Hole use at 12 Clock to protect racquet -Protect racquet when string high tension -Can give racquet head more + 2g heavy -10 Hole can use for Yonex ARC11 and Yonex Doura 10 There is a high possible that the frame will cave in if recurring restringing at higher than racket maximum recommended tension. Here is one of the solution to prevent caving for long term restringing at high tension.