spiral metal spring. sketch. black coil of wire twists outward. . doodle style

spiral silhouette spring metallic wire curl swirl twirl pressure hand drawn ring curve rough sketch doodle outline rotation round spin turning twist bounce helix roll scribble circular bend drawing vortex flexibility handwritten isolated whirlpool element coil symbol whirl elastic black design sign vector jump line shadow dark shade steel metal spring sketch twists outward style white background style idea web