INCREASE SWING SPEED-Golf swing trainer to improve your muscle memory and gain golf swing speed, up to 15-30 yards even more.Removable golf training aid can be replaced with a simple operation anytime and anywhere. Training swing speed with your existing and familiar golf clubs is more effective. USE FOR TAYLORMADE-These golf training aid are compatible with the first generation of R9 driver up to the current stealth driver clubs with adapter,including R9,RBZ,RBZ2,R11,R11S,SLDR,R15,SIM,SIM2,M1,M2,M3,M4,M5,M6,and so on. 3-WEIGHT IN ONE DESIGNED-Big Crazy adjustable golf swing speed training kit meets all your training requirements and saves your money with three weights: 155g,190g,235g. NON-SLIP RUBBER SLEEVE-The rubber sleeve protect the golf swing trainer surface increases friction and makes it easier to unscrew. PRACTICE AND WARM-UP-Keeping train with weighted golf swing trainer 3 times a week, 10-15 minutes at a time, increase swing speed by upto 5% in 6 weeks.