Conical Plug For M6 to M8 Screws, Ød3.2 to ØD9.5, 32mm Long, Silicone (Yellow), Pack of 10, HBAS95-2-P
SGD $8.00
Conical plugs can be used for a range of hole diameters. Choose one with the right top and bottom diameters to fit the hole size. Simply leave enough length clearance for easy installation and removal.