Rebar and Mesh Conversion Supplies (Pty) Ltd, chair spacer, Espaçador Cadeira de Vergalhões, Espaçadores concretos da cadeira, espaçadores de vergalhão circulares de plástico
3" Rebar Spacer Wheels for 3-6 Bar (120 pieces per carton) | Rebar Spacer Wheels and Concrete Testing Equipment - Certified Material Testing Products
Pozzolan Construction Industries --- Plastic Spacer For Reinforced Concrete Cover
Rebar spacers and supports for fiberglass rebar, buy rebar spacers and supports Chairs, Stars and plastic constituent parts for reinforcing bars, low prices.
LTM CONCRETE Snap Rebar Chairs 2 inch (250 Pack) – Quick, Easy & Durable Support – Bar Sizes 3-5 - Heavy Duty Plastic Spacers - Made in USA: Amazon.com: Tools & Home Improvement
Wheel Spacers - Rebar - Product Detail Page
Influence of reinforcement spacers on mass transport properties and durability of concrete structures - ScienceDirect
Concrete Bar Chair Spacer for Construction
Reinforcement Spacers Used in Slab, Beam, Vertical Wall