Milliard Sea-Thru Triangle Weighted Pool and Spa Vacuum Head, 11" Wide Cleaning Surface Safe on Vinyl Lined Pools Handle has spring-loaded locking clips for attaching standard extension poles, and the vacuum port fits 1 and 1 inch standard vacuum hoses Triangular plastic body is see-thru for maneuverable and accurate vacuuming along walls and into corners for a more complete clean. Weights keep the vacuum head at the bottom of the pool where it belongs. Rubber bumpers at the sides prevent scratching or scraping of vinyl pool liners Nylon bristles at the bottom are gentle on pool floors and specially angled to funnel dirt, not push it around. Vacuum head is molded from ABS plastic to be durable, long lasting, and resistant to typical pool chemicals. Cleaning surface is 11in. wide.