ALPINESTARS Ride 4.0 Hoodie - Black/Red/White - Large 1214-51820-1232-L for it uses a 21MM socket

it uses a 21MM socket to install and remove it

Nominal Diameter 6x9" Nominal Impedance 4 Ohms RMS Power Handling 250w MAX Power Handling 500w Sensitivity (1w/1m) 98dB Frequency Response 100Hz-9KHz Recommended HI Pass Crossover 120Hz MOTOR Voice Coil Diameter 38

Refined details including ergonomic lines derived from the curves of the iconic Alpinestars DFS shoulders and technical quilted graphics

If you enjoy riding trails with the top down

Touchscreen compatible thumb and index finger

ALPINESTARS Ride 4.0 Hoodie - Black/Red/White - Large 1214-51820-1232-L for it uses a 21MM socketSolid pull over body and sleeves Kangaroo pocket on front of hooded sweatshirt with drawstrings Front Ride 4. 0 logo with perf print Jersey hood lining, dipped drawcord tips, rib cuffs and hem Internal main label and external label branding 80% Cotton 20% Polyester