Description: 1 Piece aluminum alloy finger spool and 1 piece stainless steel finger reel The aluminum alloy finger spool is empty and ready for you to add your own choice of line The stainless steel finger reel attached with 31m line and double end bolt snap clip Strong, durable, reliable and corrosion resistant Great accessories for cave and wreck diving, scuba diving, snorkeling and so on Specification: Aluminum Alloy Finger Spool Size (Outer Diameter x H): Approx. 8.3 x 5.1 cm / 2.27 x 2 inch Axis Center Hole Diameter: Approx. 3.2 cm / 1.26 inch Slot Width: Approx. 4.3 cm / 1.69 inch Color: Blue Stainless Steel Finger Reel Material: 304 stainless steel Finger Reel Size (Diameter x Height): Approx. 75 x 40 mm/ 3 x 1.6 inch Rope Size (L x D): Approx. 31 m/101.7ft x 2 mm/0.08 inch Bolt Snap Size (L x W): Approx. 10 cm/3.9 inch x 23 mm/0.9 inch Color: Fluorescent Green Package Includes: 1 Piece Aluminum Alloy Finger Spool 1 Piece Stainless Steel Finger Reel (with 31m line and snap) Note: Please allow slightly difference due to manual measurement. Color may be slightly different since different monitor. Thanks!