Description: Intended for Hexagon shaped Bolts & Nuts Improving the Finished Appearance of your Product Hexagonal Heavy Duty Rubber Protect Against Weathering & Tampering Enhance Finished to Nuts & Bolt Heads Specification: M4 7 x 8.5mm, fits 7mm spanner size nuts & bolts. M5 8 x 9.5mm, fits 8mm spanner size nuts & bolts. M6 10 x 13mm, fits 10mm spanner size nuts & bolts. M8 13 x 15mm, fits 13mm spanner size nuts & bolts. M10 17 x 19.5mm, fits 17mm spanner size nuts & bolts. 5 Sizes, each 10pcs, total 50pcs Package Includes: 50 Pieces Nut & Bolt Dome Cover Caps