THE 4 HOLE - TEE FLAT PLATE IS A STRONG, EXTERNAL FASTENING METHOD THAT REQUIRES NO MACHINING SERVICES AND CAN BE USED TO CONNECT MORE THAN TWO PROFILES TOGETHER. THIS FASTENING OPTION CAN PROVIDE INFINITE POSITIONING ALONG THE PROFILE T-SLOT, ALLOWING FOR A LARGE DEGREE OF ADJUSTABILITY. IT IS A LONG-LASTING CONNECTION THAT IS EASILY ASSEMBLED AND CAN BE REPOSITIONED AND REUSED. THE SUGGESTED MOUNTING HARDWARE CAN BE FOUND ON THE "SUGGESTED HARDWARE" TAB. TIP: USE A DOUBLE SLIDE-IN ECONOMY T-NUT TO SAVE TIME AND MONEY. PRE-LOAD YOUR HARDWARE PRIOR TO CONNECTING PROFILES TO SIMPLIFY YOUR ASSEMBLY.