PROTECH ASTON PRO | CHAN PENG SOON EDITION | 3UG2/4UG2 | MAX 38LBS | Badminton Racket 40T Japanese Toray Graphite- Produces a shaft that flexes and stores energy, bringing explosive power on impact with the shuttlecock.- Provide stability and greater power when driving and smashing.- High compressive strength with maximum tension up to 38lbs.NERC Technology- Nano Epotec Resin CompositeNano-Tapered Shaft– Sharpening gradually from the joint to the cap which features 2 kick-point to extend shuttles flight.Ultra Slim Shaft 6.7mm– Vastly reduces air resistance whilst providing maximum feel.PRODUCT DETAILSConstruction : 40T Japanese Toray Graphite + Nano Epotec ResinLength : 675mmShaft Flexibility : StiffWeight : 4U/3UFrame : Aero-Dynamic FrameBalance : 4U [295 (+/-5mm)]/3U [297 (+/-5mm)]Grommet System : 76 HolesRecommended Tension : 27 - 32(+/-2lbs)Shaft Diameter : 6.7mmMax Tension : 38lbsRecommended : Attacking and Controlling Free XP66Plus Permance String. Does not include racket cover.