A fiber optic splice holder with a slack storage feature has a reel having a hub for fiber slack storage, and a means for holding a splice at its center, whereby fiber slack can be stored and retrieved while protecting the fiber splice, in a manner which avoids entanglement with other splices and fibers. The nozzle 2 is mounted on a flange 16 held between slip rings 18, 20 so that the nozzle can be rotated to change the direction of the jet. The brake mechanism is controlled by fore and aft pivotal movement of the brake lever, while the change speed mechanism is controlled by sideways pivotal movement of the brake lever and the release lever. A stretcher frame is provided and is movable between a folded and stowed position in the chamber and an unfolded and extended position to the outside of the chamber. In a particular embodiment, the method for selectively oligomerizing olefins includes trimerizing ethylene to selectively form 1-hexene. The striking tools further include a matrix bonded to the skeleton that may extend through the skeleton.