0.625" T to T Spacer - Durable Metal Spacer for Automotive, Machinery, and DIY Projects - Perfect for Alignment, Gaps, and Precision Spacing

Use this female T-thread to male T-thread spacer to extend standard T-thread adapters to achieve the correct backfocus for your telescope. Available in 0.25", 0.5", 0.625", 0.75" and 1.00" lengths. Outside diameter is 1.90". Anodized black aluminum, internally threaded for light baffling. Made in USA.