Zoom icon Click to expand Tap to zoom Chevron down icon Chevron down icon 31 Day Calendar Wheel by PERRIN Sale $14.76 | / SKU 72-507 1 2 3 4 5 6 7 8 9 10+ Quantity Chevron down icon Quantity Add to cart Spinner icon Notify me when back in stock Email address Email me when available 31 Day Calendar Wheel a 31 tooth brass wheel is 35.0 mm in diameter- can be shortened.