or rectangular extensions each finger further has a spring mounted detent allowing for sliding of the finger into engagement with the end of the connecting cylindrical rod and receiving of the detent into a recess or opening at the end of the connecting cylindrical rod for selectively retaining the connection of the connecting cylindrical rod with the connector the detent means will prevent the connector rod slipping off the finger to cause accidental disassembly therefore the connector allows construction of a safe climbing frame for children the detent is achieved by means of a resilient means mounted between radially extending ribbing of the fingers and connected to the protruding button which extends outwardly from the cylindrical circumferential extremities of the finger to engage an opening in the side of a hollow cylindrical end of connecting rod thus preventing relative sliding movement of the rod and finger of the connector for accidental disassembly the resilient means is a spring means in the form of a folded plastic element having an acute expanded angle as the rest position but the material allowing resilient compression to a compressed angle until released each finger can include a ribbing structure for receiving therebetween in sliding mode said folded plastic element in use the final consumer uses the framework system to form a framework shape 12 by the following steps 1 a plurality of first connector rods of first.