What Our Gearhead(R) Experts Are Saying: "These Forza Round Puzzle Spacers make headset adjustments simple on modern integrated setups. The two-piece design means I don't have to disconnect cables-just pop them on or off as needed, saving time in the workshop or during a quick fit change."We use the Forza Round Puzzle Spacers when fine-tuning cockpit height on integrated cable bikes. Designed as two interlocking pieces, each spacer slides into place without removing brake or shift lines-a small but smart upgrade that makes maintenance and adjustments far easier.