RAM® T 型旋鈕，適用於 D 尺寸插座臂

The threads on this knob are machined perfectly for a D size socket arm, making installation smooth and snug. It feels solid in the hand and gives a secure grip for adjusting angles on the go.

I was worried about stripping the old knob, but this one threaded on smoothly and tightened firmly without any play. Really glad I grabbed it as a backup for my D size arm setup.

The threads on this T-Knob engage perfectly with my D size socket arm, making adjustments rock-solid even under heavy vibration. It’s a simple replacement, but the grip is noticeably better than the original.