40 is sized to be less than the diameter of roller 42 by urging roller 42 against and into groove 34 axial movement is prevented by the coaction between the roller and groove while rotational movement is still allowed for the positioning of the light on an object to be illuminated in addition a plurality of rollers may be used as well for ease of rotational movement to disengage worklight 12 from support 32 roller 42 is released from its engagement with groove 34 to do this outer sleeve 23 is actuated in a manner to remove finger 45 from its engagement with roller 42 this causes roller 42 to travel downwardly on sloped surface 50 away from and out of groove 34 once roller 42 clears groove 34 the light may be disengaged from the support as shown in fig6 and 7 the location of the groove and roller may be switched as shown catch 60 defines a bore 64 in which groove 62 is located post 70 on the other hand may include thereon rollers 72 and 74 which partially extend from the post and are adapted to be depressed into post 70 in use coaction between groove 62 and rollers 72 and 74 is similar to the groove roller engagement described above as post 70 is inserted into bore 64 rollers 72 and 74 are urged inwardly until they coact with groove 62 then the rollers spring outwardly to inhibit any further axially movement while permitting rotational movement as described above it should be understood that various changes and modifications to.