Your basic black nylon tie-down cleats. They are resistant to salt and sun, and will outlast your boat. Available in 3 ,4, 5, & 6.5" sizes

Part #	A	B	C	D	Fastner
SD-043030	3"	11/16"	1"	1-5/8"	#6FH
SD-043040	4"	7/8"	1-1/8"	2"	#8FH
SD-043050	5"	1-1/16"	1-7/16"	2-1/2"	#10FH
SD-043065	6.5"	1-3/8"	1-11/16"	2-15/16"	#12FH