DXP Enterprises, Inc., together with its subsidiaries, engages in distributing maintenance, repair, and operating (MRO) products, equipment, and services to the energy and industrial customers primarily in the United States and Canada.

Applied Industrial Technologies, Inc. distributes industrial motion, power, control, and automation technology solutions in North America, Australia, New Zealand, and Singapore.

Global Industrial Company, through its subsidiaries, operates as a value-added industrial distributor of industrial and maintenance, repair, and operation (MRO) products in North America.

MSC Industrial Direct Co., Inc., together with its subsidiaries, distributes metalworking and maintenance, repair, and operations (MRO) products and services in the United States, Canada, Mexico, and the United Kingdom.

Pool Corporation distributes swimming pool supplies, equipment, and related leisure products in the United States and internationally. The company offers maintenance products, including chemicals, supplies, and pool accessories; repair and replacement parts for pool equipment, such as cleaners, filters, heaters, pumps, and lights; fiberglass pools, and hot tubs and packaged pool kits comprising walls, liners, braces, and coping for in-ground and above-ground pools; pool equipment and components for new pool construction and the remodeling of existing pools; and irrigation and related products consisting of irrigation system components, and professional lawn care equipment and supplies.

Fastenal Company, together with its subsidiaries, engages in the wholesale distribution of industrial and construction supplies in the United States, Canada, Mexico, North America, and internationally.

W.W. Grainger, Inc. distributes maintenance, repair, and operating (MRO) products and services in the United States, Japan, Canada, the United Kingdom, and internationally.

Watsco, Inc., together with its subsidiaries, distributes air conditioning, heating, refrigeration equipment, and related parts and supplies. The company distributes equipment comprising residential ducted and ductless air conditioners, such as gas, electric, and oil furnaces; commercial air conditioning and heating equipment systems; and other specialized equipment.

Core & Main, Inc. distributes water, wastewater, storm drainage, and fire protection products and related services to municipalities, private water companies, and professional contractors in the municipal, non-residential, and residential end markets in the United States.

SiteOne Landscape Supply, Inc. engages in the wholesale distribution of landscape supplies in the United States and Canada. The company provides a selection of approximately 135,000 stock keeping units, including irrigation supplies, which comprise controllers, valves, sprinkler heads, and irrigation pipes; fertilizer, grass seed, and ice melt products; control products, such as herbicides, fungicides, rodenticides, and other pesticides; landscape accessories that include mulches, soil amendments, drainage pipes, tools, and sods; nursery goods, which consist of deciduous and evergreen shrubs, ornamental, shade, evergreen trees, field grown and container-grown nursery stock, roses, perennials, annuals, bulbs, and plant species; hardscapes, such as pavers, natural stones, blocks, and other durable materials; and outdoor lighting products that include lighting fixtures, LED lamps, wires, transformers, and accessories.