RAM® アルミニウム製トラックボールベース Tボルトアタッチメント付き - Cサイズ

The machined aluminum feels incredibly solid sliding into the track, and the 1.5" ball gives a perfect grip for my accessory arm. It took me less than a minute to get it locked in place and secure.

I slid this into my Yakima track system and it locked down tight with zero wobble. The stainless steel T-bolt has a satisfying click when it seats properly, and the ball joint holds my phone mount at any angle I need.

That marine-grade aluminum base feels rock-solid, and the rubber friction washer holds it perfectly in place even on bumpy roads. I've been using it in my overhead track system for a week now and nothing has budged. Exactly the sturdy mount I needed for my C-size ball.