A snap closure for a scoop stretcher for detachable connection to their supporting bars has a fork-shaped part (6) and insertable therein tongue-shaped part (7). These parts (6,7) are detachably connected to one another by means of a spring-loaded bolt (5), wherein the fork-shaped part (6) sliding surfaces (61) which rub on sliding surfaces (74) of the tongue-shaped part (7). At least one of the sliding surfaces (61, 74) is formed by a plastic coating has a to the corresponding sliding surface (61, 74) of different hardness for reducing the sliding friction. The coating weight and volume of the fastener elements can be kept low without suffering losses rod formality. In addition, the sliding performance is improved and the operability of the closure is guaranteed over a long time even under heavy load.
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