The Sting - Leg Roller Rack Attachment grip strength The digital numbers are 4"

The digital numbers are 4" tall and the bright red digits are highly visible

Another happy customer rated it 5 stars on Amazon saying:

The knurling on the bar is known for being medium-depth

then today your workouts have forever improved thanks to the best bar out there- the Fringe Sport Wonder Bar (and it's a "wonder"ful bar

The Sting - Leg Roller Rack Attachment grip strength The digital numbers are 4"One Nut Quick Lock Mount: Oversized knurled nut installs fast and locks in solid. No pins. No tools. No movement. Fits 1 and Rack Holes: Built in adapter works with nearly any rack with our open ecosystem design. 400lbs. Load Capacity: Built to handle serious weight with zero flex or slip. Thick 5 Premium Roller Pad: High density padding delivers comfort, stability, and long term durability. Rack Safe UHMW Protection: UHMW lining on the nut and roller